{"id":75612,"date":"2022-10-16T16:00:17","date_gmt":"2022-10-16T23:00:17","guid":{"rendered":"https:\/\/blogv2prod.wpenginepowered.com\/blog\/?p=75612"},"modified":"2023-09-18T17:21:12","modified_gmt":"2023-09-19T00:21:12","slug":"p2273-code-o2-sensor-signal-biased-stuck-rich-bank-2-sensor-2","status":"publish","type":"post","link":"https:\/\/www.carparts.com\/blog\/p2273-code-o2-sensor-signal-biased-stuck-rich-bank-2-sensor-2\/","title":{"rendered":"P2273 Code: O2 Sensor Signal Biased\/ Stuck Rich Bank 2 Sensor 2"},"content":{"rendered":"<!DOCTYPE html PUBLIC \"-\/\/W3C\/\/DTD HTML 4.0 Transitional\/\/EN\" \"http:\/\/www.w3.org\/TR\/REC-html40\/loose.dtd\">\n<html><body><span class=\"span-reading-time rt-reading-time\" style=\"display: block;\"><span class=\"rt-label rt-prefix\">Reading Time: <\/span> <span class=\"rt-time\"> 2<\/span> <span class=\"rt-label rt-postfix\">minutes<\/span><\/span><style>.kadence-column_579b66-6f > .kt-inside-inner-col{border-top-width:0px;border-right-width:0px;border-bottom-width:0px;border-left-width:0px;}.kadence-column_579b66-6f > .kt-inside-inner-col,.kadence-column_579b66-6f > .kt-inside-inner-col:before{border-top-left-radius:0px;border-top-right-radius:0px;border-bottom-right-radius:0px;border-bottom-left-radius:0px;}.kadence-column_579b66-6f > .kt-inside-inner-col{column-gap:var(--global-kb-gap-sm, 1rem);}.kadence-column_579b66-6f > .kt-inside-inner-col{flex-direction:column;}.kadence-column_579b66-6f > .kt-inside-inner-col > .aligncenter{width:100%;}.kadence-column_579b66-6f > .kt-inside-inner-col:before{opacity:0.3;}.kadence-column_579b66-6f{position:relative;}@media all and (max-width: 1024px){.kadence-column_579b66-6f > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}@media all and (max-width: 767px){.kadence-column_579b66-6f > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}<\/style>\n<div class=\"wp-block-kadence-column inner-column-1 kadence-column_579b66-6f qk-look-widget\"><div class=\"kt-inside-inner-col\">\n<div class=\"wp-block-ultimate-post-row ultp-block-5bbc25  qk-main-wrap\"><div class=\"ultp-row-wrapper\"><div class=\"ultp-row-content\">\n<div class=\"wp-block-ultimate-post-column ultp-block-b19c9d\"><div class=\"ultp-column-wrapper\"><style>.wp-block-kadence-advancedheading.kt-adv-heading_da1dd4-b7, .wp-block-kadence-advancedheading.kt-adv-heading_da1dd4-b7[data-kb-block=\"kb-adv-heading_da1dd4-b7\"]{text-align:center;font-size:20px;font-style:normal;}.wp-block-kadence-advancedheading.kt-adv-heading_da1dd4-b7 mark.kt-highlight, .wp-block-kadence-advancedheading.kt-adv-heading_da1dd4-b7[data-kb-block=\"kb-adv-heading_da1dd4-b7\"] mark.kt-highlight{font-family:Inter;font-weight:500;font-style:normal;color:#f76a0c;-webkit-box-decoration-break:clone;box-decoration-break:clone;padding-top:0px;padding-right:0px;padding-bottom:0px;padding-left:0px;}.wp-block-kadence-advancedheading.kt-adv-heading_da1dd4-b7 img.kb-inline-image, .wp-block-kadence-advancedheading.kt-adv-heading_da1dd4-b7[data-kb-block=\"kb-adv-heading_da1dd4-b7\"] img.kb-inline-image{width:150px;vertical-align:baseline;}<\/style>\n<div class=\"kt-adv-heading_da1dd4-b7 summary-title wp-block-kadence-advancedheading\" data-kb-block=\"kb-adv-heading_da1dd4-b7\"><span>Summary<\/span><\/div>\n\n\n\n<ul class=\"wp-block-list\"><li>On-board diagnostics will log a P2273 trouble code if an issue with the post-catalytic converter oxygen (O2) sensor has been detected.<\/li><li>A rich running condition, faulty O2 sensor, and wiring problems can trigger diagnostic trouble code P2273.<\/li><li>An illuminated check engine light, increased fuel consumption, and poor engine performance are common symptoms associated with this code.<\/li><\/ul>\n<\/div><\/div>\n<\/div><\/div><\/div>\n<\/div><\/div>\n\n\n\n\n\n<p>Your vehicle is equipped with multiple sensors that work together to keep your engine running. Oxygen sensors, for example, are critical to keeping your engine&rsquo;s air\/fuel mixture at optimal levels. They communicate the amount of oxygen in the exhaust stream to the <a href=\"https:\/\/www.carparts.com\/engine-control-module\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"powertrain control module\">powertrain control module<\/a> (PCM). These sensors also measure the efficiency of your ride&rsquo;s catalytic converter.<\/p>\n\n\n\n<p>P2273 is a generic trouble code that indicates a possible problem with the oxygen sensor&rsquo;s signal. Read on to learn more about it.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">What Does the P2273 Code Mean?<\/h2>\n\n\n\n<p><a href=\"https:\/\/www.carparts.com\/blog\/search-obd2-codes-list\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"Diagnostic trouble code\">Diagnostic trouble code<\/a> P2273 stands for &ldquo;O2 Sensor Signal Biased\/Stuck Rich Bank 2 Sensor 2.&rdquo;&nbsp; The error code refers to the post-catalytic converter <a href=\"https:\/\/www.carparts.com\/oxygen-sensor\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"O2 (oxygen) sensor\">O2 (oxygen) sensor<\/a> on bank #2, sensor #2.&nbsp; Bank #2 is the side of the engine that does not house cylinder # 1.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/10\/close-up-view-of-downstream-o2-sensor-1024x681.jpg\" alt=\"close up view of downstream o2 sensor\" class=\"wp-image-75616\" width=\"1024\" height=\"681\" srcset=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/10\/close-up-view-of-downstream-o2-sensor-1024x681.jpg 1024w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/10\/close-up-view-of-downstream-o2-sensor-300x200.jpg 300w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/10\/close-up-view-of-downstream-o2-sensor-768x511.jpg 768w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/10\/close-up-view-of-downstream-o2-sensor-1536x1022.jpg 1536w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/10\/close-up-view-of-downstream-o2-sensor-600x400.jpg 600w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/10\/close-up-view-of-downstream-o2-sensor-150x100.jpg 150w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/10\/close-up-view-of-downstream-o2-sensor.jpg 2000w\" sizes=\"(max-width: 1024px) 100vw, 1024px\"><figcaption>P2273 is a generic trouble code that indicates a possible problem with the oxygen sensor&rsquo;s signal.<\/figcaption><\/figure>\n\n\n\n<p>Code P2273 is set once the signal that&rsquo;s sent by the oxygen sensor is stuck rich. This usually means that there&rsquo;s inadequate air in the exhaust.<\/p>\n\n\n\n<p>The oxygen sensor signal is designed to fluctuate within a given voltage range. If the engine&rsquo;s control module (PCM) does not detect the right fluctuations, it&rsquo;ll also trigger the P2273 code.<\/p>\n\n\n\n<p><em><strong>Note:<\/strong> The definition of code P2273 can differ according to the vehicle manufacturer. Check the appropriate repair manual or repair database for the exact code definition.<\/em><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">What Are the Possible Causes of the P2273 Code?<\/h2>\n\n\n\n<ul class=\"wp-block-list\"><li>Rich running condition caused by a leaking injector, faulty mass air flow sensor, etc.<\/li><li><a href=\"https:\/\/www.carparts.com\/blog\/bad-o2-sensor-symptoms-causes-replacement-cost\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"Bad oxygen sensor\">Bad oxygen sensor<\/a><\/li><li><a href=\"https:\/\/www.carparts.com\/blog\/car-pcm-meaning-symptoms-of-failure-and-more\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"PCM malfunction\">PCM malfunction<\/a><\/li><li>Wiring problems<\/li><\/ul>\n\n\n\n<div id=\"article-search-widget\">\n<div class=\"cp-search\">\n<div align=\"center\">\n<img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/cld.partsimg.com\/image\/upload\/w_auto,dpr_auto\/carparts\/logos\/badge_wordmark\/full_color\/CP_LOGO_COLOUR_RGB\" alt=\"CarParts.com\" width=\"300\" height=\"56\">\n<\/div>\n<form id=\"cpsearchform\" name=\"cpsearchform\" action=\"https:\/\/www.carparts.com\/search\" method=\"get\" target=\"_blank\" accept-charset=\"character_set\" aria-label=\"search CarParts.com\">\n    <input type=\"text\" class=\"keyword\" name=\"q\" placeholder=\"Search for parts on CarParts.com\" value=\"\" aria-label=\"Search CarParts.com\"><input type=\"submit\" class=\"btn-search\" value=\"Search\" aria-label=\"Search\">\n<\/form>\n<\/div>\n<\/div>\n\n\n\n<h2 class=\"wp-block-heading\">What Are the Possible Symptoms of the P2273 Code?<\/h2>\n\n\n\n<ul class=\"wp-block-list\"><li><a href=\"https:\/\/carparts.com\/blog\/check-engine-light-flashing\" target=\"_blank\" rel=\"noreferrer noopener nofollow\" aria-label=\"Illuminated check engine light\">Illuminated check engine light<\/a><\/li><li>Noticeable decrease in engine performance<\/li><li>Decreased fuel economy<\/li><\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">How to Diagnose the P2273 Code<\/h2>\n\n\n\n<p>DTC P2773 can occur in a wide range of vehicles. This does not, however, imply that there is a one-size-fits-all answer to this problem.<\/p>\n\n\n\n<p>Oxygen sensor diagnosis and repair necessitate advanced auto repair knowledge and expertise. In most circumstances, taking your vehicle to a trained mechanic will result in an accurate diagnosis.<\/p>\n\n\n\n<p>Here&rsquo;s a video of what the diagnostic procedure for this code might involve:<\/p>\n\n\n\n<figure class=\"wp-block-embed is-type-video is-provider-youtube wp-block-embed-youtube wp-embed-aspect-16-9 wp-has-aspect-ratio\"><div class=\"wp-block-embed__wrapper\">\n<iframe loading=\"lazy\" title=\"Chevy Sabana 08 DTC P0160 P2273 Diagostic and Repair Process\" width=\"500\" height=\"281\" src=\"https:\/\/www.youtube.com\/embed\/ZvdMq6ibuCM?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe>\n<\/div><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">How to Fix the P2273 Code<\/h2>\n\n\n\n<p>The procedure for clearing a P2273 code varies based on the year, make, and model of the vehicle. Before performing any repairs, it&rsquo;s critical to get vehicle-specific repair information.<\/p>\n\n\n\n<p>You can either hire a professional or try to handle the repairs yourself. Whatever route you take, we recommend brushing up on your auto repair expertise by checking your vehicle&rsquo;s repair manual or referring to an online repair database for vehicle-specific information.<\/p>\n<\/body><\/html>\n","protected":false},"excerpt":{"rendered":"<p><span class=\"span-reading-time rt-reading-time\" style=\"display: block;\"><span class=\"rt-label rt-prefix\">Reading Time: <\/span> <span class=\"rt-time\"> 2<\/span> <span class=\"rt-label rt-postfix\">minutes<\/span><\/span>Your vehicle is equipped with multiple sensors that work together to keep your engine running. Oxygen sensors, for example, are&#8230; <a href=\"https:\/\/www.carparts.com\/blog\/p2273-code-o2-sensor-signal-biased-stuck-rich-bank-2-sensor-2\/\" rel=\"nofollow\">Read More<\/a><\/p>\n","protected":false},"author":4,"featured_media":75617,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_genesis_hide_title":false,"_genesis_hide_breadcrumbs":false,"_genesis_hide_singular_image":false,"_genesis_hide_footer_widgets":false,"_genesis_custom_body_class":"","_genesis_custom_post_class":"","_genesis_layout":"","footnotes":""},"categories":[1314],"tags":[1323,1190],"ppma_author":[2607,2855],"class_list":{"0":"post-75612","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-obd-ii-trouble-codes","8":"tag-engine-control-module-2","9":"tag-oxygen-sensor-2","10":"entry"},"acf":{"adrotate_specific_mobile_ad":"","adrotate_specific_desktop_ad":""},"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.7 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>P2273 Code: O2 Sensor Signal Biased\/ Stuck Rich Bank 2 Sensor 2 - In The Garage with CarParts.com<\/title>\n<meta name=\"description\" content=\"Did your scan tool retrieve a P2273 code? 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